Study of the Spinal Cord Activity in the Pig

Olivier Tsiakaka (1) , Olivier Romain (2) , Mehdi Terosiet (2) , Aymeric Histace (2) , Habib Benali (3) , Pierre-François Pradat (3) , Farouk Vallette (1) , Annick Alexandre-Gauthier (1) , Michaël Feher (1) , Sylvain Feruglio (1)

1 SYEL - Systèmes Electroniques
2 ASTRE [Cergy-Pontoise]
3 LIB - Laboratoire d'Imagerie Biomédicale [Paris]

Current imaging techniques on organs take advantage of the knowledge we have acquired but so far, few information on the functioning of the Spinal Cord can be found. In this endeavor, this study aimed to analyze optical properties of the Spine and use these results to determine to what extent Near Infra-Red Spectroscopy could be used to assess neural activity in the spine. In the first step, the absorption spectrum of the spinal cord of a pig was obtained using a spectrophotometer for the dimensioning of the main blocks of an embedded system. Secondly, adapted light sources with custom probes were used to observe autonomic functions in the spinal cord at rest and under stimulation. Results on the measured haemodynamics show the impact of global stimuli on a local section of the Spinal Cord. The PPG of the spinal cord at rest showed an AC-to-DC ratio, below 1 %, which is a low contrast in comparison with the finger.

Mots clés: Biomedical imaging; Spinal Cord; Haemodynamics

Domaines: Ingénierie biomédicale; Electronique; Traitement du signal et de l'image [eess.SP]

Olivier Tsiakaka, Olivier Romain, Mehdi Terosiet, Aymeric Histace, Habib Benali, et al.. Study of the Spinal Cord Activity in the Pig. 5èmes Journées d'Etude sur la TéléSANté (JETSAN), Dan Istrate, May 2015, Compiègne, France. ⟨hal-01163550⟩